Ethanol has largely fizzled here in the US. But in Brazil, people have been driving their cars for years powered only by sugarcane ethanol. In recent years though, ethanol in Brazil has hit a speed bump.

SÃ£o Paulo-based rapper Kleber Gomes is known throughout Brazil simply as Criolo. He started from humble beginnings, but these days he's making hip-hop that's reaching a whole generation of young Brazilians.

Ethanol has largely fizzled here in the US. But in Brazil, people have been driving their cars for years powered only by sugarcane ethanol. In recent years though, ethanol in Brazil has hit a speed bump.

SÃ£o Paulo-based rapper Kleber Gomes is known throughout Brazil simply as Criolo. He started from humble beginnings, but these days he's making hip-hop that's reaching a whole generation of young Brazilians.